It wasn't immediately clear if he had an attorney. Police haven't indicated whether they've identified another suspect in the attack.

Stiviano was called to the Sixth Precinct police station Tuesday morning to identify the suspect in a lineup, according to her lawyer Mac Nehorary.

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Nehorary told NBC News on Monday that Stiviano was leaving a restaurant near the Gansevoort Hotel in the Meatpacking District when two men approached her and “punched her on the right side of her face several times."

Celebrity website RadarOnline.com originally reported the story. According to the website, Stiviano, who has described herself as black and Mexican, was attacked by two white men who hit her and yelled racial slurs at her.

Stiviano gained notoriety after a recorded conversation between her and Sterling was posted online by TMZ Sports in which Sterling can be heard criticizing Stiviano about bringing black friends to Clippers games. He was also heard chastising her for posting a photo on Instagram with Magic Johnson.

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NBA Commissioner Adam Silver has fined Sterling $2.5 million and sought to ban him for life from the league.

On Friday, Sterling filed a lawsuit seeking $1 billion in damages from the NBA after being forced to relinquish control of team.